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פּוֹפּוּלָרִי >

Mary, who is sixteen years old, is four times as old as her brother. How old will Mary be when she is twice as old as her brother?

פתרון

Mary, who is sixteen years old, is four times as old as her brother. How old will Mary be when she is twice as old as her brother?

פתרון

Mary^{'} s age is : 16

Plug in to find h o w o l d w i ll M a ry b e w h e n s h e i s tw i ce a s o l d a s h er b ro t h er .

צעדי פתרון

Translate the problem into an equation:

4 x = 16

4 x = 16, x

פתור בשביל:

x = 4

Mary's age מצא את:

16

Mary^{'} s age is : 16

Plug in to find h o w o l d w i ll M a ry b e w h e n s h e i s tw i ce a s o l d a s h er b ro t h er .

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